inbound_rule / outbound_rule `port` leads to unstable state

[jlaine]

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Terraform Version

Terraform v1.7.5 on linux_amd64

• provider registry.terraform.io/scaleway/scaleway v2.38.2

Affected Resource(s)

• scaleway_instance_security_group

Terraform Configuration Files

resource "scaleway_instance_security_group" "voip" {
  ...

  outbound_rule {
      action = "accept"
      protocol = "UDP"
      port = 5060
  }
}

Expected Behavior

Applying the plan then running terraform plan should report the infrastructure matches the configuration.

Actual Behavior

Instead, we end up with a plan which wants to update the infrastructure, at least for ports above 1024.

Changing port to port_range = "5060-5060" seems to work around the issue.